- 限定供給: The maximum supply of Bitcoin is capped at 21 million coins. This design is intended to mitigate the risk of inflation.
- Lost Bitcoin: It is estimated that millions of bitcoins have been lost forever to date. This refers to bitcoins that have become inaccessible due to forgotten wallet passwords or damaged hard drives.
- Satoshi's Bitcoin: It is said that there are approximately 1 million bitcoins in the address believed to belong to Satoshi Nakamoto. Since these bitcoins have not been moved, it is unclear whether Nakamoto intends to use them.
- Halfinning: Approximately every four years, an event occurs in which Bitcoin’s block reward is halved. This serves to further limit the supply; the initial reward was 50 Bitcoin, and it is currently 6.25 Bitcoin.
- First Business Transaction: In 2010, a user purchased two pizzas for 10,000 bitcoins—the first publicly known commercial transaction using Bitcoin.
- The Vast Number of Private Keys: The number of possible combinations of Bitcoin addresses and private keys is enormous, making it practically impossible for a human to try them all.
- Quantum Computer: There are concerns that the advent of quantum computers could threaten Bitcoin’s cryptography. However, the Bitcoin protocol can be updated to incorporate stronger cryptographic technologies.
- Bitcoin's Energy Consumption: It is often pointed out that Bitcoin mining consumes enormous amounts of electricity. This is sometimes raised as a concern for the environment.
- Mining in China: At one point, China accounted for the majority of Bitcoin mining, but recently, mining activities have been shifting to other countries due to environmental concerns and regulations.
- 多重署名: Bitcoin transactions offer a multi-signature option that requires multiple keys. This enhances the security of funds.
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